Re: [PATCH v2 4/4] pcmcia: Convert to use pci_bus_for_each_resource_p()

[Dominik Brodowski <linux@dominikbrodowski.net>]

Am Fri, Nov 04, 2022 at 03:29:44AM +0900 schrieb Krzysztof Wilczyński:
> Hello,
> 
> [...]
> > > > -
> > > > -	for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) {
> > > > -		res = s->cb_dev->bus->resource[i];
> > > > -#else
> > > > -	pci_bus_for_each_resource(s->cb_dev->bus, res, i) {
> > > >  #endif
> > > > +
> > > > +	pci_bus_for_each_resource_p(s->cb_dev->bus, res) {
> > > >  		if (!res)
> > > >  			continue;
> > > 
> > > Doesn't this remove the proper iterator for X86? Even if that is the right
> > > thing to do, it needs an explict explanation.
> > 
> > I dunno what was in 2010, but reading code now I have found no differences in
> > the logic on how resources are being iterated in these two pieces of code.
> 
> This code is over a decade old (13 years old to be precise) and there was
> something odd between Bjorn's and Jesse's patches, as per:
> 
>   89a74ecccd1f ("PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs")
>   cf26e8dc4194 ("pcmcia: do not autoadd root PCI bus resources")
> 
> > But fine, I will add a line to a commit message about this change.
> 
> I wouldn't, personally.  The change you are proposing is self-explanatory
> and somewhat in-line with what is there already - unless I am also reading
> the current implementation wrong.
> 
> That said, Dominik is the maintainer of PCMCIA driver, so his is the last
> word, so to speak. :)
> 
> > Considering this is done, can you issue your conditional tag so I will
> > incorporate it in v3?
> 
> No need, really.  Again, unless Dominik thinks otherwise.

Ah, thanks for the correction. Then v2 is perfectly fine.

Thanks,
	Dominik